how to implement multi date selection

hello, i have the following scenario with my client each instructor will train some student and we have training schedules table will take

student id 
instructor id 
type of training id 
date and time of starting training 
number of classes per session 

so at the current status the date and time field will give you the ability to select one date and time what if i want to select multi date ?

now for single schedule mean that need daily entry but now the client want multi-date select so for example weekly they will enter the schedule for one student and this schedule will be repeated for the whole week on the same time

i know there is some js plugin for this but i want to know what is the best way to implement it with laravel is making the field is json column or make separate pivot table for it or there is better way to implement it ?

thanks in advance