You can follow the steps in this Guide from Paylocity on how to navigate to the Integrations Marketplace, enable API Access, and eventually link your account in Merge.
If these steps do not apply to you, and you are connecting to a non-Paylocity Partner, please follow this guide instead!
Step 1: Sign into Paylocity
Step 2: Navigate to the Integrations Marketplace
You should navigate to HR & Payroll > Web App > Web Services > Integrations > "Browse Marketplace"
Step 3: Browse to find the specific Organization you are trying to connect to
Step 4: Click "Begin Integration" and sign the PADE (“Paylocity Automated Data Exchange”) form
Step 5: Submit the form and wait for Paylocity to confirm.
It can take a few days for Paylocity to confirm the PADE request. It is not an instant approval.
Step 6: Once Paylocity confirms your request, input your Company ID into Link