As of now, Pakistanis cannot enter Bahrain without a visa. Even if they are a manager or Supervisor need a visa to enter Bahrain.
For Indian national that, the Bahrain Causeway allows only the Supervisor and the Manager for an on-arrival visa with their Iqama.
And other Iqama holders need to get a visa in the following categories: Bahrain visa to cross the causeway.
Bahrain Visa Categories
1. 14 days Single Visa
2. 1-month multiple visas
3. 3 months multiple visa
4. 1-year multiple visa
All low-category Iqamas, like Labour, Plumber, etc, can also get Bahrain visas.
For more details, call me or see my WhatsApp (https://wa.me/966554643121)