The process of creating a pseudo-tie into MISO involves the Entity owner submitting a new application if they are not a current MISO Market Participant or an Attachment B change form for MISO to review and verify.  This may be a lengthy process depending on the parameters of the tie in question (for example, the Pseudo Tie can be new, modify path or volume, terminate or, reinstatement. These types apply to both Generation or Load).
Reference: For more detailed information, please review BPM 030 - Pseudo Ties,  1.6 Notification/Approval Timeframes and document requirements,