Joe Ga wasn't particularly in a rush to recruit people, as he didn't need that many people in the short term.
What he discussed with 'Walnut' seemed like a promise, but in reality, it was a two-way choice.
Yuginebert Company is a state-owned enterprise of Seville Country. If the 'Professor's' Tunis exhibition turned out well, the treatment these people could receive once back home might be a completely different story. After all, the professor also needed a few reliable hands to strengthen his core team.
If the 'Professor' didn't understand this himself, Joe Ga would remind him; wanting to stock up in the future, it would be a bit more reassuring to have a few acquaintances escorting the goods.
Most importantly, Joe Ga felt that a team of ten people was a bit too much for him. About six people, a squad's setup, was the best configuration for him, whether for escorting goods or combat engagements.