I have asked question about MultiSelect Lookup control here https://community.dynamics.com/365/f/dynamics-365-general-forum/472935/does-multiselect-lookup-control-support-recently-used/1298841
And we would like to further develop on that control particularly in the area of
1. enable dynamically add custom filter
2. allow control whether to show or hide most recently view items
3. possible make this available for multiple line control
Anyone knows where are source codes we can look at.