I would not advise to uglify the bicycle. It should look nice, especially since you commute to work on it.

Try to lock it on the rack with the good quality locks. You never know anything until you try. Maybe they will let your bike alone. Just look at it carefully after work that nothing is out of order.

Cycle to work in the cycling clothing and bring your ironed working clothes in the special plastic garment bag in the pannier.

So even if your bike is damaged, you will have the working clothes to go home by taxi. By the way you can go to the meetings by taxi too.

And look pensively at and around your building. Dedicate some time to this and you may notice the opportunity, which was not that obvious from the beginning. Bike needs not that much space after all.

Always come to work 20 - 30 minutes earlier than others. It always makes things easier.