@Jayasri4 OOTB HRSD process uses the Employee center portal for new hires, there is no separate portal for new hires in the OOTB process. However, not every organisation is comfortable using the same esc portal, for one of our customers we built a completely custom portal purpose built for the new hires to complete their onboarding process. The portal, pages and widgets are clones from the existing ESC portal. However, not all features of ESC are available in the custom onboarding portal.
To maintain the candidate access we created a custom table which is an extension of the sys_user table. In terms of roles we are using OOTB sn_hr_core.hrsm_new_hire and sn_hr_core.hrsp_new_hire.
Hope this helps.
