A lot of answers in this thread… And they’re all good…
However, this is what you do if you want to have the Storyline Agent be with the same NPC Corp as your regular Agents…
For example let’s say that NPC Corp is Brutor Tribe and your regular Agents are Level 2 Security Agents…
First, find the location of the nearest Brutor Tribe Corp Storyline Agent and make a note of that location in your in-game Notepad.
Second, find the nearest regular Level 2 Brutor Tribe Agent nearest to that Brutor Tribe Storyline Agent. Doesn’t matter if that regular Level 2 Brutor Tribe Agent is in a different Division like Distribution, Mining, etc. Let’s say the Division for that regular Level 2 Brutor Tribe Agent is Mining. Now make a note of that Agent’s location in the in-game Notepad.
Now go back to your regular Level 2 Brutor Tribe Security Agents and run 15 missions. Make sure to note the amount of missions completed in the in-game Notepad so you don’t go past 15 missions. Now after completing the 15th mission, travel to the regular Level 2 Brutor Tribe Mining Agent and complete the 16th mission.
The Storyline Agent mission offer will then come from the nearest Storyline Agent that’s in the Brutor Tribe Corp.
After completing that Storyline mission, travel back to your regular Level 2 Brutor Tribe Security Agents and start the same process over again, run 15 missions, travel to the Level 2 Brutor Tribe Mining Agent, complete that 16th mission to receive another Storyline mission offer from the Brutor Tribe Storyline Agent, rinse and repeat…
I’ve done that a few times and yeah, it’s a bit more work taking notes and traveling to various Agents but doing that will ensure your Storyline mission offer comes from the same Corp as your regular Agents. Also if that 16th Agent is in Distribution Division, you might wanna consider just running all 16 regular missions for that Agent to cut out all the jumping around.
Lastly if you just wanna quickly gain Faction Standing without having to grind for Storyline missions, check out ‘The Plan’…
Other than that, be mindful of accepting Security missions against the Empire Factions, those will quickly generate negative standings which will greatly impede traveling through other sectors of High Security space. If you don’t want that to happen, just decline those missions and only accept missions against Pirate Factions.
Anyway that’s it, good luck to you and may you have much success…