users of a project need to see the tasks separately from the customers

[eqzjr]

What do you suggest if the users of a project need to see the tasks separately from the customers and hide the issues of other customers away from their eyes?

[Nic Brough -Adaptavist-]

I would reach for issue level security 

[eqzjr]

thanks for your support
I understanded
after associating the issue security scheme and security level with project
in automation i build a rule with following rule:

triger: when: issue created

condition: issue match JQL
customers = "customer name"

action: edit issue fields
security level = "choose from list"

after creating this issue and if customer is related to this rule,
set security level field and is hide the issue from other users that don't related with this customer
note: security level field should be added to screen that associated with project