Launch multiple applications with a single double click on Ubuntu Desktop?

Question

I have a single Ubuntu Desktop running

1. a static server (React),
2. a node server (API),
3. an instance of Zoom Client,
4. an instance of OBS, and
5. a browser pointed to the static server.

Currently, a sh script intended to launch everything executes with a double click. Three applications launch as desired.

#! /bin/bash
PORT=3000
URL="http://localhost:$PORT/controller"
gnome-terminal --tab --../repo/church/ts-cam-app/startUI.sh
gnome-terminal --tab --../repo/church/CamCtrlServer/startSvr.sh
obs --startvirtualcam --scene "Live"  &
zoom &
microsoft-edge $URL

My problem: I haven’t been able execute two other sh scripts, each residing in their respective directories, to launch the React and API services. The static server launches from the

Useless "why" information: The Ubuntu Desktop is located behind a firewall that I don’t have access to open a public port on and forward to the Ubuntu machine. However, at some future point, I plan to add a publicly accessible server to relay requests to the current one (behind the firewall). That will allow me to separate the most of the services from that current box.