Right now Amy and Andrew aren't able to set a preference to group your meetings to avoid having any gaps in your schedule!
However, you can always cue Amy and Andrew in when you send in meeting requests to let them know if they need to be scheduled during a certain time period like this
"Amy, please set this up between 2 and 4 on a Thursday"
“Andrew, please find us a time on Wednesday afternoon for a video conference”
“Amy, schedule a call tomorrow at either 1 pm or 2:30 pm”
They will then prioritize scheduling that meeting in the specified block of time. You should also make sure you’ve set the "breather time" between meetings at 0 minutes so that Amy and Andrew can more easily set meetings back to back. You can find the breather time preference by going to my.x.ai here.