Hi Shloke,

Here are the steps I took:

1. Downloaded an Update Set Utility- (Add_to_Update_Set_Global_v7.3)

2.  Imported Update set into an instance

3. Entered Sys_hub_Flow.LIST in Application navigator search box and hit enter
4  Selected the flow record to capture in the update set

However, Add to Update Set option still not shows up in the dropdown: