Under Settings > Profiles and permissions, choose the custom profile for which you wish to enable the custom permissions to access the Pulse module.
Under the Pulse module, choose the checkboxes against the following options depending on the level of access you wish to provide to that custom employee profile
Access & reply to all Pulse feed comments
Access to Pulse insights
Click Save at the bottom of the screen to apply the changes
Note: This setting is applicable only to the custom profiles you created on Kenjo