C# code modification

Starter Project Provided Concept Each TAB while being created and or selected will maintain its own time signature. Time is only accumulated while a TAB is selected. If the TAB is not selected, its time is stopped. Clicking the Add Tab button produces a new tab / body / Label (timer display) Clicking Start / Stop button starts the timer per the Label (timer display) I need the Label (timer display)="xxx" to automatically start when the Add TAB button is selected creating the new tab As new tab is created, I need the previously selected tab / Label (timer display) to pause when the new tab is opened When the selected tab changes, the previous tab should pause while the NEWLY selected tab continues where it left off. The "Disable Time Signature checkbox will turn off time signatures as new tabs are open The "Manually Pause the selected TAB" will pause the time signature label from counting