Insert single date stamp with Yasnippet and date prompt or org-read-date

Question

For kontext: The emacs package "Yasnippet" let's you replace a keyword (like "/newagenda") with a predefined text. It lets you also modify some variable fields quickly after the text insertion. It's possible to execute elisp in order to calculate values or prompt the user at insertion, too.

Example:

Input: 
/newagenda <TAB>

Desired result: 

** Agenda for [2022-04-12 Tue]
Attending 
(YES) Person 1
(NO) Person 2

The concept with variables to be replaced:

** Agenda for $DATE
Attending 
($YESNO) Person 1
($YESNO) Person 2

where $XYZ is a variable field that can be modified 
after expanding the keyword /newagenda (by hitting TAB). 

The example in Yasnippet-Synthax:

* Agenda for ${1:`(org-insert-time-stamp (org-read-date nil t "-1tue") nil t)`}
Attending
(${2:YES}) Person 1
(${3:NO}) Person 2

Here are three values that are automatically calculated. 
Values after the colon are default values for each one 
of the fields. 

The Problem:

In general I would like to generate a heading with several variable elements. I would like expand those keywords at different locations and only change the variable parts. As far as I know, it is not possible to change the insert location with capture templates. If it weren't for the date, things would work out fine with Yasnippet.

But when I use ${1:`(org-time-stamp-inactive)`} the time stamp gets inserted two times, like reportet here

As @NichD pointed out

org-insert-time-stamp inserts a time stamp into the buffer and also returns that time stamp. It seems that whatever you are doing inserts that return value, so you get the time stamp twice.

There is an option to insert the current date with `(insert (format-time-string "[%Y-%m-%d %a %H:%M]"))`. But I would like to easily schedule a meeting for e. g. next Tuesday (+1tue) or the Tuesday after that (+2tue) like it is possible with org-insert-time-stamp or org-read-date

Ideally I would like to use the prompt of org-time-stamp-inactive to select a date via this interface.

I found this on how I could use the date arithmetics to engineer a time stamp. But it did not work out when I wanted to replace a value in an elisp expression interactively, like:

* Agenda for ${2:`(org-insert-time-stamp (org-read-date nil t "${1:+2tue}") nil t)`} [0/0]

Unfortunately this does not work for me. The expression with a fixed value +2tue instead of ${1:+2tue} returns also a double time stamp.

My Idea was that I could alter the elisp expression before it is executed, but this does not work.

So the question is: How can I insert a heading at different places with just one time stamp, that I specify similar to / with a prompt?