You can change the default settings for the My Matters and Recent Matters folders in your mapped drive by configuring the following options:
enable_recent_my_workspaces_folder
max_items_to_show_in_my_workspaces
max_items_to_show_in_recent_workspaces
refresh_recent_my_matters_frequency_in_seconds
NOTE:
The descriptions and the default values for these options are mentioned in Configuring user settings.