However, IF you prefer to add IPs manually, you can do it via API, example below. Then, once those addresses are in dashboard, its easy to group them.
Andy
https://sc1.checkpoint.com/documents/latest/APIs/#~v1.9%20
mgmt_cli add host name "BAD_185.206.27.13" ip-address "185.206.27.13" --format json
mgmt_cli add host name "BAD_162.208.16.20" ip-address "162.208.16.20" --format json
mgmt_cli add host name "BAD_89.248.165.131" ip-address "89.248.165.131" --format json
mgmt_cli add host name "BAD_185.206.24.70" ip-address "185.206.24.70" --format json
mgmt_cli add host name "BAD_162.208.16.14" ip-address "162.208.16.14" --format json
mgmt_cli add host name "BAD_87.251.75.45" ip-address "87.251.75.45" --format json
mgmt_cli add host name "BAD_185.206.24.50" ip-address "185.206.24.50" --format json
Obviously, you can give them any name you like : - )