I have some questions
- Do you have your database set up in a way to provide the time slots for the times?
If not, you need to have something to create the time slots. There is a free plugin called Calendar Tools that can do this for you.
There is an example editor to help understand how it works.
- When you have the day of the week on top of the number in the same repeating group are you expecting to show Today with all time slots so Today 11AM, Today 11:30AM, Today 12:00PM followed by Tues 11AM, Tues 11:30AM, Tues 12:00PM etc.
Or do you want separate repeating groups for each day of the week that follows the current day?
To show the day as TUES/WED etc. use the :formatted as operator and select custom and set it to ddd and then make it uppercase
My example uses the current date and time, you will not, you need to figure where your date/times are coming from which is related to my first question.
For Today you need to do something like this.

Again, you need to figure out where your dates are coming from, but you basically need only to extract the day portion and match it in a basic sense, but again this depends on where the dates are coming from.
For the time portion
Putting this into one group to display is simple, just take the same formatted examples and put them into the same element

