Grant Permission on Item (Free)
This activity grants permission on the list item. You can override or append user grant permissions. Value of permission field by default can be one of the following values:
Full
Control
Design
Contribute
Read
If any custom permission levels are defined, you can also specify those. For help on creating custom permission levels see http://technet2.microsoft.com/Office/en-us/library/c5dd8b7e-202d-4d33-8535- 5c03f88ea1ff1033.mspx?mfr=true

The activity supports multi permission assignment. Use ‘,’ or ‘;’ separator to grant several permission.
Example: “Approve, Read, View Only”.
SharePoint Workflow Designer Phrase#
Grant this level permission on this item to this user.
Parameters
| Parameter | Description |
| this level | Permission level string. Multi permission assignments are supported. Use ‘,’ or ‘;’separator to grant several permission. Example: "Approve, Read, View Only". |
| this item | List item |
| this user | User name. Ex: “user@domain”, “domain\user”. It allows multiple valuesseparated by a semicolon. |
| Override currentpermissions | No – a new permission will be added to existed permissionsYes – a new permission will override (remove) all old permissions |