How can I extract the QQPLOT of the post.check function in GJRM package in R?

This is the code and I want to extract the QQplot of this Plot into post.check(out). Additionally, How can I change the title of the qqplot?

library(GJRM)
set.seed(0)
n <- 400
x1 <- round(runif(n))
x2 <- runif(n)
x3 <- runif(n)
f1 <- function(x) cos(pi*2*x) + sin(pi*x)
y1 <- -1.55 + 2*x1 + f1(x2) + rnorm(n)
dataSim <- data.frame(y1, x1, x2, x3)
eq.mu <- y1 ~ x1 + s(x2) + s(x3)
eq.s <- ~ s(x3)
fl <- list(eq.mu, eq.s)
out <- gamlss(fl, data = dataSim)
conv.check(out)
post.check(out)

Applying the idea below, the result is:

p1 <- post.check(out)
plot(qqnorm(p1$qr), main = "Normal")

In my case, I want only one plot. I would like to know that because I want to wrap only the qqplots not the histograms. The next code is not reproducible, it is only to show what I have.

DA.mrf<-as.ggplot(~post.check(DA.gamlss.mrf.6, main = "Dagum",cex=0.7,cex.axis=0.7))
GA.mrf<-as.ggplot(~post.check(GA.gamlss.mrf.6, main = "Gamma"))
LN.mrf<-as.ggplot(~post.check(LN.gamlss.mrf.4, main = "LogNormal"))
IG.mrf<-as.ggplot(~post.check(IG.gamlss.mrf.4, main = "Inverse Gaussian"))
WE.mrf<-as.ggplot(~post.check(WE.gamlss.mrf.6, main = "Weibull"))

plot_grid(DA.mrf, GA.mrf, LN.mrf,
          IG.mrf, WE.mrf, ncol=3,label_size = 5)

Thanks in advance!!

First of all, it's much more helpful if you can provide a reproducible example (see How to create a Minimal, Reproducible Example for details).

From the code you have posted, it seems that you can recreate the QQ-plot from each model separately. For example, for your first model DA.gamlss.mrf.6, you can use:

p1 <- post.check(DA.gamlss.mrf.6)
plot(qqnorm(p1$qr), main = "Your Choice of Title Goes Here")

Note that, depending on what your model is, you may need to replace qr above with qr1 and qr2. See help(post.check) from the GJRM package for details.