You use extraverted Sensing or Se when you're paying attention to your surroundings. When you're noticing how the warm breeze plays with the hairs on your bare forearm. When you close your eyes to the sun and feel the heat on your face. When you smell freshly-baked bread just out of the oven and start salivating. When you take a bite of that bread and feel the warm dough melt on your tongue. When you see your lover, fly into his arms, and kiss him. When you notice the different shades of green in an autumn forest or the colorful plumage of a colibri. It's experiencing and being fully present in the moment.
Expats preparing for an assignment using Se are likely to want to travel for a look-see trip before making up their minds. Companies may offer this for couples to explore potential living neighborhoods or schools for the children. If that's not an option, you might like to try a restaurant serving food from the country you're moving to, renting a movie made or set there, or meeting up with one of that country's nationals, e.g. at an Internations meeting or on campus of a university near you.
If Se is in different positions in your type dynamics, below is an overview pieced together with only a few items taken from Understanding Yourself and Others, An Introduction to the Personality Type Code, by Linda V. Berens and Dario Nardi.
Let me say this again to be very clear: the description of how Se can be expressed in the different positions is not exhaustive and only meant to give you an overview. I would love to have you comment below how Se shows up for you.
For example, how many gas stations do you pass on your way to work? How are you choosing the clothes you will wear tomorrow? When was the last time you had a massage and truly felt your body?