They're not ready to go to the temple yet. They want to make sure the zombies and skeletons succeed in their new "careers" so they decide to help them work on their sales pitches
To which the DM replied:
Femribubs and Natnari, feeling a sense of responsibility for the success of the undead in their new "careers," decide to postpone their exploration of the ancient temple. They return to the group of skeletons and zombies they had recently convinced to join the multilevel marketing scheme.
Upon their arrival, they find the undead creatures gathered around, listening intently to the skeleton leader as it tries to explain the concept of the business. It's clear they're struggling to grasp the finer points of sales and marketing.
Femribubs and Natnari step in and offer their assistance, guiding the undead through various sales techniques and strategies. They begin by helping the undead develop their own unique sales pitches, focusing on their strengths and experiences as immortal creatures.
Natnari, with their background in the Grave Domain, shares insights on how the undead can connect with potential customers who might be interested in the secrets of life and death. Meanwhile, Femribubs uses their skills in Acrobatics and Stealth to teach the skeletons and zombies how to make attention-grabbing entrances during sales presentations.
Over the course of several days, the adventurers work closely with the undead, sharing their knowledge and honing their skills. The undead creatures, once feared and reviled, begin to show promise in their newfound careers. They become more confident and adept at conveying the benefits of the multilevel marketing scheme to their peers.
Eventually, the time comes for Femribubs and Natnari to resume their quest. They say their farewells to the undead sales force, feeling a strange sense of pride in their accomplishments. As they leave, the undead creatures express their gratitude, promising to spread the word of their new business venture far and wide throughout the land.
With the knowledge that they've helped the undead find a new purpose in their unlives, Femribubs and Natnari return to the hidden path leading to the ancient temple, ready to face whatever challenges and mysteries await them inside.