Command | Permission ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀ | Description
/cgi ⠀⠀⠀ ⠀ | cleargrounditems.cgi ⠀⠀⠀⠀ | Main command
/cgi clear ⠀| cleargrounditems.cgi.clear ⠀| Manually clear all ground items

Alternatively you can use /cleargrounditems [subcommand]

auto-removal-interval: 450 #set auto-removal-interval in seconds
message-when-clearing-is-done: '&c[!] Items on the ground were removed' #set message when clearing is done
warning1: true #enable/disable warning , true - enabled , false - disabled
warning1msg: '&c[!] Items on the ground will be removed after 60 seconds.' #change message of warning
warning1time: 60 #change time when it will show (it is remaining time)
warning2: true #and here is another 9 warnings, it is better to have warnings in order, warning1, warning2, etc.
warning2msg: '&c[!] Items on the ground will be removed after 20 seconds.'
warning2time: 20
warning3: true
warning3msg: '&c[!] Items on the ground will be removed after 10 seconds.'
warning3time: 10
warning4: true
warning4msg: '&c[!] Items on the ground will be removed after 5 seconds'
warning4time: 5
warning5: false
warning5msg: '&c[!] Items on the ground will be removed after x seconds'
warning5time: 0
warning6: false
warning6msg: '&c[!] Items on the ground will be removed after x seconds'
warning6time: 0
warning7: false
warning7msg: '&c[!] Items on the ground will be removed after x seconds'
warning7time: 0
warning8: false
warning8msg: '&c[!] Items on the ground will be removed after x seconds'
warning8time: 0
warning9: false
warning9msg: '&c[!] Items on the ground will be removed after x seconds'
warning9time: 0
warning10: false
warning10msg: '&c[!] Items on the ground will be removed after x seconds'
warning10time: 0