Reschedule H1 & H4 interview on diff dates when originally booked as common slot

[surbhit4u]

I want to book H1 and H4 stamping interview together sometime in March 2022 (Am not eligible for Dropbox). However, if for any reason me and my wife cannot attend interview together, can we change interview slot for different dates later on (Diff date for h1 and diff for H4)? Or will I be forced to pick only the common interview slot during reschedule, if joint option is chosen initially.

Please help.