[SalesForce] The campaign field is missing from Lead layout in Lightning

When creating a new lead in Lightning, we were able to select the related campaign.
This field is missing from Lightning. I see there is an idea for that: https://success.salesforce.com/ideaView?id=0873A000000CPmxQAG
but with knowing Ideas status, I don't think this will ever get populated (so does the status of this idea).

So, how can we achieve this behavior? but still, use the OOB campaign field on the lead?

Best Answer

Create a custom 'campaign' look up field and add it to the lead page layout. Then set up a process builder to assign leads to the campaign as campaign members on lead creation.