create project from portfolio item (options Project in PPM or PS)

hello PPM experts, the system I use is a PPM 1.0 for S/4 HANA 1610.

Why some portfolios has the "project" option in the item header and other portfolios does not have it? how could it be activated? see example bellow:

project can be created:

project can´t be created:

does the option in portfolio item that allows to create project also creates one project in PS and PPM project management?

thanks,

Fábio