You can clone an already existing block easily in HostX.
Step 1: Go to WHMCS Admin Dashboard
Step 2: Go to Addons > WGS HostX > Blocks Manager
Step 3: Click on the Copy Icon of the block which you want to copy.
Step 4: Click on Copy Clone to copy.
Step 5: Select the Default language in which you want to create this new block.
Step 6: Add the Title of the Block and Click Submit.
Your newly created Block will now appear under All Blocks Section and you can customize or use it in any page you want.