Here are the level requirements to pass for the respective events:
8 Hand for Valerie, 5 Hand for Emma, 25 Tongue for Valerie and Emma, Tongue 15 for Sarena, and that is it. For Level 1 bond requirements.
If you have finished their respective quests and reached Level 1, here is what is available to you.
Additional scenes in: the morning, shower, and other daily events that you can miss if you aren't paying attention to where the girls are. Now you can participate in the Kitchen at the morning, Hot Tub in the afternoon, and Movies at night. I'll hope directly into the quick scenes that can be had at level 1 from morning until night.
Morning Wake up: Berry will give you a hand and lots of tongue. Emma gives herself a hand but quickly leaves. Sarena gives you a hand with your wood. Valerie will kinda worship your wood but feel unconfident to go any further.
Morning activities: You can give Valerie a hand and spank Sarena's butt.
Afternoon: You can surprise Valerie with a quick touch and tickle Sarena (not the worst way to go out if I'm honest). You may also spank Emma in the backyard when there. You can take a peek at Berry while she works.
Evening: You can give Sarena a hug in the living room, Berry a compliment, Valerie a SPANK, and a quick hand to Emma while she's streaming.
Night: You can Check Berry's posture and Valerie would not mind some extra cream.
Now for the daily events.
Shower: Berry will lend you a hand (Night). Emma lend's a rear view (Morning). Sarena provides some visual aid (Afternoon). And Valorie will kneel before you (Evening).
Cooking: Choosing any of the characters do not warrant any action at this point, but you will get a bit of dialogue from each that's pretty short.
Movie Night: Berry and Valerie (Horror and Erotic respectively) Picking Eroric, Valorie will give you a hand as you will her. Choosing Horror will have Berry lock you under her arms and legs. Emma and Sarena (Horror and Erotic) picking erotic will cause Sarena to sit on you, like the pony you are (which she affectionally calls you). Picking Horror causes Emma to hold your arm being nervous wanting your protection.
Hot Tub (Jacuzzi): Emma and Valerie, when picking Valerie she will simply sit atop you as will Emma if you selected her. Berry and Sarena, choosing Sarena she provides a warm intimate embrace while you bathe as much as Berry disapproves of her behavior and your choice. When choosing Berry, she will rest your head between her thighs.
Dancing: When selecting Berry, she will once again topple you, but this time she herself will grind against you leaving you hanging. When selecting Valerie, you need at least a level 10 in hand. When choosing Sarena, she will give you a boobjob. When catching Emma, you need a level 8 in hand to proceed properly.
And that is about as much you can do until you finish up the respective quests to progress onto level 2. Pretty interesting progression with a lot of it being quite straight forward if you figure out where to instigate the next step into progression. The Girls icon is quite useful in that regard. Though in an earlier version of this comment I had forgotten to visit Valerie at work twice which is why I thought it was a bug. A small screw up on my end. It has been a while since I gave the game a proper go. Onto level 2 material but do be warned, big choices are made within that one once reached.